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echo-cancel: orc-ify some bits for optimisation

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This uses Orc to optimise an inner loop in the core NLMS function of the
Adrian echo canceller.
This commit is contained in:
Arun Raghavan 2010-09-13 18:41:30 +05:30
parent 963250abb9
commit 83d3c8f22b
9 changed files with 472 additions and 5 deletions
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8
src/modules/echo-cancel/adrian-aec.c
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@ -17,6 +17,10 @@
#include "adrian-aec.h"
#ifndef DISABLE_ORC
#include "adrian-aec-orc.h"
#endif
#ifdef __SSE__
#include <xmmintrin.h>
#endif
@ -190,6 +194,7 @@ static REAL AEC_nlms_pw(AEC *a, REAL d, REAL x_, float stepsize)
// calculate variable step size
REAL mikro_ef = stepsize * ef / a->dotp_xf_xf;
#ifdef DISABLE_ORC
// update tap weights (filter learning)
int i;
for (i = 0; i < NLMS_LEN; i += 2) {
@ -197,6 +202,9 @@ static REAL AEC_nlms_pw(AEC *a, REAL d, REAL x_, float stepsize)
a->w[i] += mikro_ef * a->xf[i + a->j];
a->w[i + 1] += mikro_ef * a->xf[i + a->j + 1];
}
#else
update_tap_weights(a->w, &a->xf[a->j], mikro_ef, NLMS_LEN);
#endif
}
if (--(a->j) < 0) {